# this allows us to use code from
# the open-source pygame library
# throughout this file
import sys
import pygame
from constants import *
from player import *
from asteroid import *
from asteroidfield import *
from shot import *

def main():
    print("Starting Asteroids!")
    print(f"Screen width: {SCREEN_WIDTH}")
    print(f"Screen height: {SCREEN_HEIGHT}")
    pygame.init()

    #set screen resolution
    screen = pygame.display.set_mode((SCREEN_WIDTH, SCREEN_HEIGHT))

    clock = pygame.time.Clock()
    dt = 0

    #groups 
    updatable = pygame.sprite.Group()
    drawable = pygame.sprite.Group()
    asteroids = pygame.sprite.Group()
    shots = pygame.sprite.Group()

    Player.containers = (updatable, drawable)
    Asteroid.containers = (updatable, drawable, asteroids)
    AsteroidField.containers = (updatable)
    Shot.containers = (updatable, drawable, shots)

    player = Player(SCREEN_WIDTH / 2, SCREEN_HEIGHT / 2)
    asteroidfield = AsteroidField()

    while True:
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                 return
        
        updatable.update(dt)

        for a in asteroids:
            if a.colission(player):
                print("Game Over!")
                sys.exit()
            for s in shots:
                if a.colission(s):
                    a.split()
                    s.kill()

        screen.fill((0,0,0))

        for d in drawable:
            d.draw(screen)


        pygame.display.flip()
        dt = clock.tick(60) / 1000

if __name__ == "__main__":
    main()